As I recall, the dealer told us to not use the tank heaters if tanks were empty. And, I think they are electric. Don't know if this is accurate info so jump in! Remember the ice maker if you have one. Manual says to not use anti-freeze to winterize the ice maker?? We have not for two winters in Tennessee with no problems but do drain the lines to it as recommended by dealer.
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2017 Montana 3611
2012 Chevy 2500
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